John Goodman and Billy Crystal return as the voice actors for the pair, as they make their way through scare school.

Speaking about the photos, director Dan Scanlon revealed that Mike and Sulley did not get on so well after their first meeting.

"This is roughly around the time Mike and Sulley meet," Scanlon told Entertainment Weekly about the photos.

"They're at a fraternity party, and this is Mike and Sulley getting off on the wrong foot a little bit. It's the monster equivalent of a farm animal. It is not a student. This is part of a college prank."